U.S. flag

An official website of the United States government, Department of Justice.

Longitudinal studies

The Real World of Dating Violence in Adolescence and Young Adulthood: A Longitudinal Portrait

September 2014

In this seminar, Dr. Peggy Giordano of Bowling Green State University presents preliminary findings from the Toledo Adolescent Relationships Study (TARS), a thirteen-year longitudinal study examining the lives of young people transitioning into adulthood. In this study, Dr. Giordano led a team of researchers who performed five waves of structured in-home surveys paired with in-depth qualitative interviews with a subset of respondents who had experienced violence within the context of their dating relationships.

Violent Repeat Victimization: Prospects and Challenges for Research and Practice

April 2012

Research tells us that a relatively small fraction of individuals experience a large proportion of violent victimizations. Thus, focusing on reducing repeat victimization might have a large impact on total rates of violence. However, research also tells us that most violent crime victims do not experience more than one incident during a six-month or one-year time period. As a result, special policies to prevent repeat violence may not be cost-effective for most victims.

Police-on-Police Shootings and the Puzzle of Unconscious Racial Bias

June 2010

Professor Christopher Stone recently completed a study of police-on-police shootings as part of a task force he chaired in New York State. He reported on his findings and recommendations, exploring the role of race in policing decisions, methods to improve training and tactics to defuse police-on-police confrontations before they become fatal, and methods to improve the investigations of such shootings.

Children as Citizens: Engaging Adolescents in Research on Exposure to Violence

January 2011

Since the adoption of the United Nations Convention on the Rights of the Child in 1989, great strides have been made in the areas of child protection and advocacy. However, the concept of children, and specifically adolescents, as functional and engaged citizens has also emerged. Through the guidance and recognition of adults, children can participate in deliberative democracy as legitimate and competent citizens. This citizenship, like that of adults, can be used to enrich and improve local communities by creating a sense of ownership and fairness. Dr.

From the Academy to Retirement: A Journey Through the Policing Lifecycle

December 2009

Professor Rosenbaum and a panel of colleagues discuss a study to demonstrate the feasibility of creating a foundation from which to launch studies about multiple aspects of policing using standardized definitions and measurement tools. Their goal is to advance knowledge about policing and translate data into evidence-based best practices that improve training, supervision and accountability systems. The effort is expected to produce a better understanding of what motivates police officers and makes them healthier, happier and more effective.

Don't Jump the Shark: Understanding Deterrence and Legitimacy in the Architecture of Law Enforcement

November 2010

Deterrence theory dominates the American understanding of how to regulate criminal behavior but social psychologists' research shows that people comply for reasons that have nothing to do with fear of punishment; they have to do with values, fair procedures and how people connect with one another. Professor Meares discussed the relevance of social psychologists' emerging theory to legal theory and practice and how deterrence and emerging social psychology theories intertwine.

Children Exposed to Violence

June 2010

Panelists will discuss the results of the recent Office of Juvenile Justice and ​Delinquency Prevention's National Survey on Children's Exposure to Violence and findings from a seven-year follow-up study, funded by NIJ, on home visitation in New York. The survey's findings included startling figures: More than 60 percent of the children interv​iewed were exposed to violence, crime and abuse within the past year, and more than 1 in 10 were injured in an assault.

Director’s Corner: Juvenile Justice Research Comes to NIJ

David B. Muhlhausen, Ph.D.

If you have heard me describing what NIJ does lately, you may have noticed that I have started sprinkling in references to the criminal and juvenile justice systems. There’s a good reason for that.

As of October 22, the juvenile justice research function that had been part of the Office of Juvenile Justice and Delinquency Prevention (OJJDP) has moved to NIJ...